linux-kernel - Re: [PATCH] mm/vmalloc: don't use vmalloc

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Message-ID: <alpine.DEB.2.00.0912091241370.16491@router.home>
Date:	Wed, 9 Dec 2009 12:46:24 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Mike Travis <travis@....com>
cc:	tony.luck@...el.com, Andrew Morton <akpm@...ux-foundation.org>,
	Jan Beulich <JBeulich@...ell.com>, Tejun Heo <tj@...nel.org>,
	linux-mm@...ck.org, Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/vmalloc: don't use vmalloc_end

On Wed, 9 Dec 2009, Mike Travis wrote:

> > Boot with 2.6.32 and see if the per cpu allocator works. Check if there
> > are any changes to memory consumption. Create a few thousand virtual
> > ethernet devices and see if the system keels over.
>
> Any advice on how to go about the above would be helpful... ;-)

I believe you can create an additional alias device with

ifconfig eth0:<N>

or so.

> I'm doing some aim7/9 comparisons right now between SPARSE and DISCONTIG
> memory configs using sles11 + 2.6.32.  Which other benchmarks would you
> recommend for the other tests?

See f.e. http://kernel-perf.sourceforge.net/about_tests.php

lmbench?

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